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CVE-2024-3273:

A remote, unauthenticated command-injection vulnerability exists in the HTTP GET Request Handler nas_sharing.cgi of D-Link DNS-320L, DNS-325, DNS-327L, and DNS-340L devices, allowing arbitrary commands to be executed by manipulating the system argument (CWE-77); the flaw is rated high severity with a CVSS base score of 7.3 and affects firmware version 20240403 on the listed models.


Score
Info
A numerical rating that indicates how dangerous this vulnerability is.

9.8Critical
  • Published Date:Apr 4, 2024
  • CISA KEV Date:Apr 11, 2024
  • Industries Affected:20
Armis Early Warning:
Early Warning7 Days

Threat Predictions

  • EPSS Score:94.4
  • EPSS Percentile:100%

Exploitability

  • Score:3.9
  • Attack Vector:NETWORK
  • Attack Complexity:LOW
  • Privileges Required:NONE
  • User Interaction:NONE
  • Scope:UNCHANGED

Impact

  • Score:5.9
  • Confidentiality Impact:HIGH
  • Integrity Impact:HIGH
  • Availability Impact:HIGH

Description Preview

A remote, unauthenticated command-injection vulnerability exists in the HTTP GET Request Handler nas_sharing.cgi of D-Link DNS-320L, DNS-325, DNS-327L, and DNS-340L devices, allowing arbitrary commands to be executed by manipulating the system argument (CWE-77); the flaw is rated high severity with a CVSS base score of 7.3 and affects firmware version 20240403 on the listed models.

Overview

This CVE describes a critical remote command-injection vulnerability in the D-Link NAS devices DNS-320L, DNS-325, DNS-327L, and DNS-340L, located in the nas_sharing.cgi component's HTTP GET request handler. By manipulating the system argument, an attacker can inject and execute commands on the device without authentication, potentially compromising the device and related network resources. The flaw is associated with CWE-77 (Command Injection) and has a CVSS base score of 7.3 (HIGH) for both CVSS v3.0 and v3.1. The advisory notes that the affected firmware is 20240403 and that the products are end-of-life with no available patch from the vendor, increasing the risk profile. Public disclosure and available exploit information further elevate the urgency of mitigation, though remediation options are limited by the vendor’s discontinued support.

Remediation

  • No vendor patch is available; these products are end-of-life. Primary remediation is to retire the affected devices and replace them with supported, security-patched hardware.
  • If replacement is not immediately possible, apply network-side mitigations:
  • Disable or tightly restrict remote management and HTTP access from untrusted networks; block access to the NAS web interface from the internet.
  • Place the devices behind a firewall or VPN and segment them from critical networks; limit exposure to only trusted internal networks.
  • Enforce strict access controls, monitor and log all administrative activity, and consider disabling unnecessary services on the device.
  • Stay informed with vendor advisories and public risk notices and plan for timely migration to supported platforms when feasible.

References

Early WarningArmis Early Warning

Armis Early Warning provides proactive threat intelligence and early detection capabilities.Click here to learn more.

  • Armis Alert Date:Apr 9, 2024
  • CISA KEV Date:Apr 11, 2024
  • Days Early:7 Days

Industries Affected

Below is a list of industries most commonly impacted or potentially at risk based on intelligence.

Low
Mining icon
Mining
Utilities icon
Utilities
Information icon
Information
Construction icon
Construction
Retail Trade icon
Retail Trade
Manufacturing icon
Manufacturing
Wholesale Trade icon
Wholesale Trade
Educational Services icon
Educational Services
Finance and Insurance icon
Finance and Insurance
Public Administration icon
Public Administration
Real Estate Rental and Leasing icon
Real Estate Rental and Leasing
Transportation and Warehousing icon
Transportation and Warehousing
Accommodation and Food Services icon
Accommodation and Food Services
Health Care and Social Assistance icon
Health Care and Social Assistance
Arts, Entertainment, and Recreation icon
Arts, Entertainment, and Recreation
Management of Companies and Enterprises icon
Management of Companies and Enterprises
Agriculture, Forestry, Fishing and Hunting icon
Agriculture, Forestry, Fishing and Hunting
Other Services (except Public Administration) icon
Other Services (except Public Administration)
Professional, Scientific, and Technical Services icon
Professional, Scientific, and Technical Services
Administrative and Support and Waste Management and Remediation Services icon
Administrative and Support and Waste Management and Remediation Services

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